HW: Really isolate the SD Card [move RTC]
ppannuto opened this issue · comments
Some of the power issues have been traced back to SPI bus activity interleaving unexpectedly with SD Card operations; we already largely isolated the SD Card, but let's move the RTC off while we're at it.
As much as I'd love to do this, the nRF52840 only has three SPI buses and we're already using them all (IMU, RTC/SD card, comms with STM32)